CLOSE MASTER KEY (Transact-SQL)
Applies to:
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
Closes the master key of the current database.
Transact-SQL syntax conventions
Syntax
CLOSE MASTER KEY
Note
This syntax is not supported by serverless SQL pool in Azure Synapse Analytics.
Note
To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation.
Arguments
Takes no arguments.
Remarks
This statement reverses the operation performed by OPEN MASTER KEY. CLOSE MASTER KEY only succeeds when the database master key was opened in the current session by using the OPEN MASTER KEY statement.
Permissions
No permissions are required.
Examples
USE AdventureWorks2022;
CLOSE MASTER KEY;
GO
Examples: Azure Synapse Analytics and Analytics Platform System (PDW)
USE master;
OPEN MASTER KEY DECRYPTION BY PASSWORD = '43987hkhj4325tsku7';
GO
CLOSE MASTER KEY;
GO
See Also
CREATE MASTER KEY (Transact-SQL)
OPEN MASTER KEY (Transact-SQL)
Encryption Hierarchy